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Assertion If objective and eye lenses of a microscope are interchanged then it can work as telescope. Reason The objective lens of telescope has small focal length.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Correct answer: Assertion is correct but Reason is incorrect

Solution

The assertion is correct because swapping the objective and eyepiece can make the setup behave like a telescope. The reason is incorrect: a telescope’s objective lens has a large focal length, not a small one.

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